Building-molds.



J.-D. BIOKFORD.

BUILDING MOLDS.

v APPLIOATION FILED DEC. 30, 1911.

1,101,246. June 23,1914.

. fiz /Jizior 7 m filvvwy COLUMBIA PLANOGRAPH C0. WASHINGTON, D. C.

JOHN D. BICKFOR-D, OF CLEVELAND, OHIO.

BUILDING-MOLDS.

Specification of Letters Patent.

Application filed December 30, 1911.

Patented June 23, 1914.

Serial No. 668,707.

To all whom it may concern:

Be it known that I, JOHN D. Broxronn, a citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain- The objects of the invention are to pro-' vide a knock down frame or molds for use in erecting concrete buildings, and it is designed to provide a frame from materials detachably connected together which can be used over and over again without injury and thus greatly reduce the expense of materials and labor necessitated in building a number of Walls of concrete.

The invention comprises inner and outer retaining walls, composed of siding strips of regular uniform width. These siding strips are superimposed edge upon edge and clamped between regularly spaced vertical studs on their outer faces, and vertical furring strips or metal-strips on their inside faces. Peculiar forms of retaining bolts are employed for connecting these retaining walls and for holding the walls together until firmly set, and the inner portions are afterward left in the concrete.

The invention further consists in the combination and arrangement of parts and construction of details as hereinafter described, shown in the accompanying drawings and specifically pointed out in the claims.

In the accompanying drawings Figure 1 is a plan view of the wooden retaining walls for the concrete wall of a building including a chimney in the angle of the walls; Fig. 2 is a side elevation of the same; Fig. 3 is a transverse section showing one of the sectional retaining bolts.

In these views two superimposed sections of retaining wall are shown 1, and 2. The inner retaining wall comprises the planks or siding members A A supported upon each other between the regularly spaced vertical studs B, B, preferably formed of hard wood, and the vertical furring strips C, O, and the outer wall comprises similar siding members A, A, the vertical studs B, B and vert-i cal metal or wooden strips D, D. The furring strips are intended for receiving nails by means of which wooden or metal lath or plaster board can be secured to the wall and the furring strips remain in the concrete wall permanently when the retaining walls are removed.

The outer and inner retaining walls are rigidly but detachably secured together by means of bolts formed in inner and outer sections, E, F, and G respectively as shown in detail in Fig. 8. The central portion F determines the thickness of the wall and is supplied with nuts H, H at each end of double length, and adjustable thereon. These nuts abut against the furring strips C, C, on one retaining wall and against the metal strips D, D on the other retaining wall, and thus determine the thickness of the wall. The other portions E and G of the sectional bolts pass through the studs B, B, siding A, A, and furring strips 0 in one retaining wall and through the studs, siding, and metal strips D in the other wall, and enter the outer ends of the nuts H, H

to which they are adjustably secured. They are eye bolts, to facilitate turning them for' adjustment and removal from the nuts H, H, which are left on the rods F to form shoulders thereon. Clamping nuts I, I secure the outer ends, and the outer extremities of the bolts are formed preferably into eyes so that they can be screwed into the nuts 7 Since the studs and furring strips are regularly spaced in a building, the siding boards can be made in predetermined lengths and used over and over again, since no nails or spikes are employed to splinter them and the eye bolts E and G can be used indefinitely, but the central portions F, F and nuts H, H are left in the concrete permanently, thus making the concrete wall more durable.

The construction can be indefinitely raised by rabbeting or interlocking the ends of superimposed studs as at K, K and horizontal tie strips or rods L, L of metal or wood can be used exterior to the studs to make the construction rigid in every respect.

To form a buttressed exterior for the concrete wall vertical wooden frames M may be set against the inner face of the outer wall, the sides beveled at M so that they can be easily removed, and to provide the inner face of the wall with vertical, channels to receive moisture and thus obtain the advantage of a hollow wall. These frames M may be set vertically between the furring strips so that the laths or mortar boards can be secured to the furring strips, and over the wall spaces formed by the wooden frames.

In Figs. 1 and 2 is shown in dotted lines the position of a window frame R which can be set closely between the retaining walls and will be secured within the concrete wall when the retaining walls are removed, thus greatly simplifying the method of providing window openings in the wall.

At N is shown a core for a chimney opening which is inclosed by wedge shaped and vertically placed boards N, N which are preferably bound together by metal hoops N 1 the hoops or bands N being held firmly in position by the action of the wedge shaped boards 1 This core can be placed wherever it is desired to construct a chimney, one side being on the vertical plane of the main portion of the concrete wall, and shown as on the plane of the inner retaining wall. The retaining wall 0 is built around and spaced from the core and may be formed of vertically placed boards, secured by bands 0 and bolts 0 The tapered boards inclosing the core can readily be loosened by drawing out the central one N and a plate N secured to the lower end of the core serves to lift the boards N, N, with the core out of the chimney opening in the concrete wall. An eye N is preferably left for this purpose.

In Fig. 1 is shown the offset T for a pilaster on the outer wall, constructed by placing the siding boards A outside of the studding B, B. The same or longer bolts can be employed to secure the parts together.

Having described the invention what I claim as new and desire to secure by Letters Patent is:

1. In a separable mold for a concrete wall, opposite retaining walls composed of horizontal boards, furring strips resting against said walls, standards abutting the outer face of said retaining walls, nuts abutting the outer face of said standards, bolts connecting said walls and having inner and outer sections, and nuts connecting said sections against which nuts said furring strips abut, said inner bolt sections and nuts being detachable from the outer sections of the bolts and remaining embedded in the concrete wall formed in the mold, behind said furring strips. V v

2. In combination, knock-down retaining walls for a concrete mold, each comprising horizontal inner boards, spaced studding upon the outer side thereof, outer horizontal strips connecting the studding, vertical strips spaced upon the inner face of the boards, and bolts passing through the studding, boards, and outer and inner strips, and connecting the respective walls, said bolts having separable inner and outer sections, nuts on said outer sections abutting the outer face of said studding, and nuts connecting said sections, against which nuts the vertical strips abut, said last mentioned nuts remaining in the wall when the outer bolt sections are removed. 7 i

In testimony whereof, I hereunto set my hand this 26 day of December 1911. r

JOHN D. BICKFORD. In presence of- M. M. MONROE, ERNEST MOSMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

